EP2121209B2 - Verfahren zur unterstützung einer wenigstens teilweise manuellen steuerung einer metallbearbeitungsstrasse - Google Patents

Verfahren zur unterstützung einer wenigstens teilweise manuellen steuerung einer metallbearbeitungsstrasse Download PDF

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Publication number
EP2121209B2
EP2121209B2 EP08708742.5A EP08708742A EP2121209B2 EP 2121209 B2 EP2121209 B2 EP 2121209B2 EP 08708742 A EP08708742 A EP 08708742A EP 2121209 B2 EP2121209 B2 EP 2121209B2
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EP
European Patent Office
Prior art keywords
metal
working line
proportion
phase
state
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP08708742.5A
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German (de)
English (en)
French (fr)
Other versions
EP2121209B1 (de
EP2121209A1 (de
Inventor
Stefan Schmors
Klaus Weinzierl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
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Application filed by Siemens AG filed Critical Siemens AG
Priority to PL08708742T priority Critical patent/PL2121209T5/pl
Publication of EP2121209A1 publication Critical patent/EP2121209A1/de
Publication of EP2121209B1 publication Critical patent/EP2121209B1/de
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D11/00—Process control or regulation for heat treatments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B21B37/76—Cooling control on the run-out table
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates

Definitions

  • the invention relates to a method for supporting an at least partially manual control of a metalworking line in which strip or slab-shaped or pre-profiled metal is machined, as well as a metalworking line.
  • Such metalworking lines for example, production lines for rolling the metal, cooling sections for cooling the metal, or a combination of both - are well known.
  • certain phase states of the metal are required, which means that certain phase components of different phases of the metal, in particular of the steel, are predetermined as target values. Compliance with these targets is an essential criterion for the quality of the metal.
  • phase transformation model that determines, considering a tracking, the metalworking line operating parameters, the primary data describing the metal entering the metalworking line and its state, and measurements, at least one phase portion of tracked metal points and, based on the result, a cooling path to control accordingly.
  • the proportion of at least one metallurgical phase of the metal taking into account the operating parameters of the metal processing line and / or state parameters of the metal influencing the phase state and the proportion of the at least one phase in relation to the specific location of the metalworking line is displayed to an operator wherein, in addition to determining the current portion with changed control of at least one component of the processing line, also a prognosis for the future portion taking into account the changed control at the location is determined and displayed, whereby a test mode is selected, in which the changed control is not taken over immediately.
  • the proportion of at least one phase is first determined at a specific point of the metalworking line that is relevant in particular for the machining process.
  • the determination result can furthermore be used for the partial automatic control of the metalworking line, but in the method according to the invention is advantageously also displayed to an operator in real time, for example at a control device.
  • the operator thus receives information relevant to the quality of the processed metal in a timely manner, which directly reflects the influence of manual actuations made on it, so that, if necessary, further adjustments can be used to further optimize the manual settings.
  • the display is thus quality assurance, but also prevents cobbles and the production of rejects and increases the safety of the metalworking line.
  • the display can be used even when the metalworking line is operated in an automatic mode, so that it is recognized early that a quality problem occurs and can be switched to manual control to make appropriate corrections.
  • manual control should also be understood here as a minimum intervention - in short, any type of user information that has an influence on the operating procedure, however small.
  • An example of such manual intervention, which also represents manual control, is the selection of a suitable cooling plan or cooling parameters.
  • a model for determining the phase state of the metal at different metal points may be used to determine the proportion, taking into account a tracking of the metal points and / or primary data describing the metal entering the metalworking line and its state become.
  • Such models provide reliable information about the phase state of the metal at various metal points.
  • the model is initialized for each metal point entering the metalworking line, possibly due to a measurement. All metal points in the road are tracked. Since, due to the tracking and operating parameters, the influences at all metal points are known, the phase state at each of the metal points considered can be continuously updated. For the display then only the corresponding information must be queried at the specific point of the metalworking line. This information may, for example, be taken from the metal point closest to the particular location.
  • the model can also be integrated into a superordinate model, for example with a temperature model. Of course, other methods may be used to determine the phase component (s), such as measurements.
  • measured variables can also be included in the determination of the phase state of the metal.
  • at least one measuring device is used for recording state parameters, in particular a pyrometer.
  • the temperature can be measured at a specific metal point, so that, for example, in conjunction with the primary data, an initialization of the model can be carried out at such a point.
  • state parameters can also be used to adapt the model, for example by suggesting a correction of a correction of the phase state determined by the model.
  • the metalworking line may be any type of metalworking line in which the phase state of the metal plays an important role.
  • the metalworking line may be a production line in which ferritic rolling is provided.
  • Ferritic metal can be rolled with a lower rolling force than austenitic metal, for example. It is important here that the transformation point of ferrite to austenite is known as precisely as possible and lies between two specific rolling stands. In the method according to the invention, it can then be provided, for example, that the display of the phase fraction takes place at each roll stand. In this way, ferritic rolling could be realized, since the operator at any time has an overview of the phase states of the metal and can optionally intervene by a manual control in the rolling process.
  • the method is particularly advantageously applicable if the metal is processed in a metal processing line designed as a cooling section for cooling the metal.
  • Cooling sections often connect to a production line and serve to prepare the metal for removal.
  • a reel may be provided at the end of the cooling section, onto which the processed metal is reeled.
  • further processing takes place at the end of the cooling section or another removal or storage device is provided.
  • An example of this is the heavy plate mill. Since there can not be reeled, the sheets are straightened straight instead in a stretcher and stored as plates.
  • actuators are provided which serve to influence the temperature of the metal and therefore also have an influence on the phase components.
  • a cooling section may, for example, have valves arranged above and below a roller table, via which coolant, in particular water, is applied to the metal. For example, the amount of water and the water pressure can be controlled manually or automatically. Frequently, the temperature of the metal is measured at the beginning and at the end of the cooling section. It can therefore be provided that measured values of a first pyrometer connected upstream of the cooling section and one downstream of the cooling section are used as the state parameter. Of course, other temperature measurements can be made. The measured values of the first pyrometer, together with primary data and general information about the incoming metal, for example, that it is made of 100% austenite, serve to initialize the phase components at a metal point. The second pyrometer ultimately serves to control and adapt the model.
  • a total production can be considered, which means, for example, a combination of production line and cooling section.
  • the proportion is expediently displayed with reference to a location at the end of the processing line, for example at the end of the cooling section, before rolling up on a possibly provided reel. It is then possible to assess immediately whether the desired target parameters are reached with the current operating parameters.
  • a forecast for the future share taking into account the change in control at the point determined and displayed. This means that, knowing the current operating parameters and the current phase proportions at the position at which the changed control is carried out, from this position a prediction can be made up to the point with respect to which the display is made, so that the effect of Change for an operator is immediately apparent - especially if the comparative value with the previous settings there is still displayed.
  • a test mode is selected. In this test mode, changes to the control can be defined on the user interface, but these are not taken over immediately. Nevertheless, it is possible, based on the determination of the phase components and the known changed and unmodified operating parameters, to make a prognosis indicating what effects the intended change will have. If the operator is satisfied, he can take over the changes, for example, by pressing another control element in the controller.
  • phase diagrams exist in which a variety of different phases are included. A determination and display of the proportions of all these phases is not appropriate. Therefore, mainly relevant phases are preferably displayed. In particular, it can be provided that the proportion of austenitic and / or ferritic and / or pearlitic and / or cementitious and / or further phases is determined and displayed.
  • the share can be displayed in any convenient, easy-to-grasp and clearly arranged form.
  • a warning message is output.
  • tolerance values can be specified that represent a quality tolerance that should be adhered to.
  • the invention also relates to a metalworking line for the treatment of strip or slab-shaped or pre-profiled metal with a control device, comprising a continuous determination of the proportion of at least one metallurgical phase of the metal based on at least one specific point of the metalworking line taking into account the operating conditions influencing the phase parameters and / or arithmetic unit formed by state parameters of the metal, an input device for at least partially selectively possible manual control of the operation of the metalworking line and a display device for displaying the proportion of the at least one phase with respect to the specific location of the metalworking line.
  • a metalworking line is designed for carrying out the method according to the invention, and the statements relating to the method can be transferred to the metalworking line.
  • the arithmetic unit thus receives signals indicating the state of the metal or the metalworking line, in the form of operating parameters and / or state parameters. After determining the at least one phase, corresponding signals are sent to the display device so that the display can take place.
  • a model for determining the phase state of the metal at different metal points taking into account a tracking of the metal points and / or primary data describing the metal entering the metalworking line and its state is stored .
  • a model may also be part of a more comprehensive model of the metalworking line, which may additionally include, for example, a temperature model.
  • the metalworking line may comprise a measuring device for receiving state parameters, in particular a pyrometer.
  • the metalworking line can be any type of processing line, for example a production line or a complete line. Particularly advantageous is the embodiment, when the metalworking line is formed as an actuator for influencing the temperature of the metal comprehensive cooling section. Pyrometers may be provided at the beginning and at the end of such a cooling section, wherein the arithmetic unit is designed as a state parameter to take into account the measured values of the pyrometers. Of course, other pyrometers or other measuring devices may be provided.
  • the display device may be designed to display the portion in the form of a curve and / or as a pie chart and / or in numerical form and / or as a bar chart and / or as a color graphic.
  • the invention Not only in the processing of strip and slab-shaped metal can be used advantageously.
  • pre-profiled metal for example the production of pipes or profiles, manual control options are often given, so that a use here is profitable possible.
  • FIG. 1 shows a metalworking line 1, which is designed here as a cooling line 2.
  • the cooling line 2 is connected downstream of a production line whose last rolling stand is indicated at 3.
  • a metal to be processed 4 here in strip form, first passes through the production line and then the cooling section 2, whereupon it is unwound for removal or for intermediate storage for further processing on a reel 5, which is connected downstream of the cooling section 2.
  • the cooling section 2 comprises actuators 6, which serve to influence the temperature of the metal 4.
  • the actuators 6 include flaps and valves with which water can be applied to the band-shaped metal 4 to cool it. Although only a few actuators 6 are shown in the drawing, however, the cooling path may comprise a large number of such actuators 6.
  • the cooling section 2 further comprises a control device 7, which in FIG. 1 is indicated schematically.
  • the control device 7 comprises a computing unit 8, an input device 9 for the partial manual control of the actuators and a display device 10. Furthermore, the cooling line is in each case a pyrometer 11 for measuring the temperature of the metal 4 upstream or downstream.
  • the arithmetic unit 8 controls the actuators 6 (eg valves, nozzles or flaps, etc.) according to operating parameters S, which can be changed in a manual operating mode at least partially by the operator via the input device 9, so that the actuators 6 are controlled in groups or separately can be.
  • the manual controllability does not have to be permanently provided, it is just as conceivable that it is possible to switch between an automatic operating mode and a manual operating mode. Furthermore, it is conceivable that parts of the actuators 6 can be formed separately for manual control. Furthermore, it is conceivable that the operator varies input quantities of automatic operation, e.g. a gain factor that increases the amount of water as the belt speed increases (semi-automatic).
  • Other manual operations that provide manual control include, for example, changing primary data (e.g., reel target temperature), changing the cooling strategy (e.g., cooling gradient), changing the length of uncooled belt sections, or making a quality assessment that does not change the automatic itself.
  • the arithmetic unit 8 receives primary data P of the metal 4, which describes the metal 4 or its state when entering the cooling section 2, and as a further operating parameter, the metal velocity v supplied.
  • a tracking 28 is provided which tracks the position of a metal point of the metal 4 during the passage of the cooling section 2 constantly.
  • the path tracking 28 can also be integrated into the arithmetic unit 8; in any case, the arithmetic unit 8 also has the data of the path tracing 28 available.
  • a model 12 of the cooling section 2 is now stored, which includes a model 13 for determining the phase state of the metal 4 at different metal points and a temperature model 14 for determining the temperature or the temperature distribution of the metal 4 at different metal points.
  • the models 13 and 14 can also be implemented as a common model.
  • the model 13 is designed to determine the proportion of at least one phase of the metal at a plurality of metal points, taking into account the operating state parameter S influencing the phase state, the temperature measured values T, the primary data P and the tracking data x.
  • the temperature model 14 is designed to carry out such a determination with respect to the temperature or the temperature profile. The determination of the proportions or the temperature takes place continuously.
  • the models 13 and 14, for example, work as follows.
  • the temperature at a certain metal point is measured on the cooling section 2 upstream pyrometer 11. Together with the primary data P, one or more initial phase portions can thereby be determined. From there, the metal point is traced, wherein, for example, by the operating parameters S and the speed v, which influence the temperature or the phase state of the metal 4 and whose size is known, a continuous tracking of the at least one phase component or the temperature in real time is realized. In front of the reel 5 ends the tracking 28 of the metal points. This means that at all tracked metal points of the metal 4 the at least one phase component from the model 13 is known at all times.
  • the second temperature measurement at the downstream pyrometer 11 serves for consistency check and adaptation of the model.
  • the information obtained by the model 13 on the phase state of the metal 4 is not or not only used to control the cooling section 2, but the proportion of at least one phase with respect to a specific point 15 of the cooling section 2, here on End of the cooling section 2, at or shortly after the pyrometer 11, brought by the display device 10 to an operator for display.
  • This allows on the one hand a constant quality assurance monitoring, on the other hand an operator can observe the effect of a change of the operating parameters S in the context of a manual activation. Therefore, additional information is available which leads to an improvement in the quality of the machined metal 4 and to an increase in the safety of the cooling section 2.
  • phase component (s) taking into account operating parameters and state parameters of the metal 4 and the display of the proportion on the display device 10 is provided, but also the possibility of a prognosis.
  • the model 13 is designed to predict in advance what effects an altered control of actuators 6 of the cooling line 2 has on the phase state of the metal 4 at the point 15.
  • the current phase components of a metal point immediately before the affected actuator or the first actuator 6 concerned are used to proceed from a preliminary calculation, taking into account the current and changed operating parameters S and the other operating parameters, such as the speed v, the expected proportion the at least one phase determined at the point 15.
  • This information is also advantageously displayed to the operator after the determination, so that the latter does not have to wait to observe the influence on the phase distribution until a metal point processed with the new operating parameters actually reaches the point 15.
  • a test mode into which the controller 7, e.g. can be switched by selecting a corresponding switch panel shown on the display device 10, wherein changed operating parameters S are not immediately, but, for example, only after actuation of a control element, taken over.
  • a prediction for the location 15 is already created and displayed during the unmodified modified control, so that an operator can adjust his setting accordingly without producing waste. This forecast is also based on the current phase proportions or temperatures contained in models 13 and 14.
  • FIG. 2 One possible user interface 29 to be displayed on the display device 10 (a monitor) is shown FIG. 2 ,
  • 16 general information about the metalworking line 1 are displayed in a first area
  • a second area 17 is used to display and set operating parameters S of the actuators 6.
  • the design of such areas is well known and will not be detailed here.
  • an area 18 for displaying information about the metal 4 is provided.
  • information 19 about the temperature of the metal 4 at the point 15 is displayed.
  • a display 20 of the currently present at the point 15 phase portions of the metal 4, as determined by the model 13 is provided.
  • a prognosis 21 in the case of modified actuation in the area 18 is also shown.
  • the user interface 16 comprises an operating element 22 for activating the test mode already described above, as well as a further operating element 23 for accepting the modified operating parameters entered in a test mode.
  • an operating element 22 for activating the test mode already described above, as well as a further operating element 23 for accepting the modified operating parameters entered in a test mode.
  • a mouse control selectable controls 24 may be provided.
  • FIGS. 3A-3D show various possibilities of the design of the display 20 of the proportion of at least one phase.
  • 3A shows a display 20a in the form of a pie chart. Shown are the proportions of the phases ferrite, austenite and the proportion of other phases.
  • 3B shows a display 20b in the form of a bar chart. The proportions of the phases ferrite, austenite, perlite and cementite are shown.
  • 3C shows a numerical display 20c of the proportions of the phases ferrite and austenite and other phases.
  • FIG 3D shows a possible display 20d in the form of a color graphic.
  • the proportions of the phases austenite, perlite, cementite and ferrite are shown in different colors and scaled in the same length.
  • the boundaries 25 between the colors shift according to the changes as indicated by the arrows 26.
  • a scale of 0% to 100% can be provided so that the shares can also be read.
  • color coding is also possible with the other displays 20a, 20b and 20c.
  • the control device 7 is furthermore designed to output a warning message if at least one component exceeds or falls below at least one predetermined value at the point 15. Such a warning message 27 is exemplary in FIG. 4 shown.
  • the display device 10 may also include an acoustic component that may generate an audible warning signal. The alert directs the operator's attention to the display 20 of the phase state of the metal 4. It is pointed out that there is a problem with the quality or even a dangerous situation.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Control Of Heat Treatment Processes (AREA)
  • Coating With Molten Metal (AREA)
  • Numerical Control (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
EP08708742.5A 2007-02-15 2008-02-06 Verfahren zur unterstützung einer wenigstens teilweise manuellen steuerung einer metallbearbeitungsstrasse Not-in-force EP2121209B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08708742T PL2121209T5 (pl) 2007-02-15 2008-02-06 Sposób wspomagania przynajmniej częściowo ręcznego sterowania linią obróbki metali

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007007560A DE102007007560A1 (de) 2007-02-15 2007-02-15 Verfahren zur Unterstützung einer wenigstens teilweise manuellen Steuerung einer Metallbearbeitungsstraße
PCT/EP2008/051450 WO2008098863A1 (de) 2007-02-15 2008-02-06 Verfahren zur unterstützung einer wenigstens teilweise manuellen steuerung einer metallbearbeitungsstrasse

Publications (3)

Publication Number Publication Date
EP2121209A1 EP2121209A1 (de) 2009-11-25
EP2121209B1 EP2121209B1 (de) 2011-10-12
EP2121209B2 true EP2121209B2 (de) 2014-08-13

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EP08708742.5A Not-in-force EP2121209B2 (de) 2007-02-15 2008-02-06 Verfahren zur unterstützung einer wenigstens teilweise manuellen steuerung einer metallbearbeitungsstrasse

Country Status (13)

Country Link
US (1) US8359119B2 (ko)
EP (1) EP2121209B2 (ko)
KR (1) KR20090122948A (ko)
CN (1) CN101610856B (ko)
AT (1) ATE528081T1 (ko)
BR (1) BRPI0807810A2 (ko)
CA (1) CA2678062A1 (ko)
DE (1) DE102007007560A1 (ko)
MX (1) MX2009008349A (ko)
PL (1) PL2121209T5 (ko)
RU (1) RU2457054C2 (ko)
UA (1) UA95129C2 (ko)
WO (1) WO2008098863A1 (ko)

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EP2121209B1 (de) 2011-10-12
US20100131092A1 (en) 2010-05-27
US8359119B2 (en) 2013-01-22
PL2121209T5 (pl) 2015-05-29
EP2121209A1 (de) 2009-11-25
CA2678062A1 (en) 2008-08-21
RU2457054C2 (ru) 2012-07-27
BRPI0807810A2 (pt) 2014-08-05
CN101610856A (zh) 2009-12-23
ATE528081T1 (de) 2011-10-15
MX2009008349A (es) 2009-08-12
RU2009134330A (ru) 2011-03-20
UA95129C2 (ru) 2011-07-11
PL2121209T3 (pl) 2012-03-30
WO2008098863A1 (de) 2008-08-21
DE102007007560A1 (de) 2008-08-21
CN101610856B (zh) 2011-09-07
KR20090122948A (ko) 2009-12-01

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